CN102915894A - Arc blowing device of direct current circuit breaker - Google Patents
Arc blowing device of direct current circuit breaker Download PDFInfo
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- CN102915894A CN102915894A CN2012104199833A CN201210419983A CN102915894A CN 102915894 A CN102915894 A CN 102915894A CN 2012104199833 A CN2012104199833 A CN 2012104199833A CN 201210419983 A CN201210419983 A CN 201210419983A CN 102915894 A CN102915894 A CN 102915894A
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- auxiliary
- moving contact
- contact
- arc
- circuit breaker
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Abstract
The invention relates to a component of low-voltage power transmission equipment, in particular to an arc blowing device of a direct current circuit breaker, which is used for extinguishing arc in a breaking process of the direct current circuit breaker. An auxiliary movable contact is arranged on a movable contact of the arc blowing device of the direct current circuit breaker; a spring capable of swinging the auxiliary movable contact in a closed direction is arranged on the movable contact; the auxiliary movable contact and the movable contact are in conductive connection through flexible connection; an auxiliary static contact is arranged on an opposite side of the auxiliary movable contact; the auxiliary static contact is connected with a static contact through a coil; the coil is wound on an iron core; magnetism guiding arms are connected with the two ends of the iron core respectively; and the two magnetism guiding arms extend to the two sides of an broken opening of the auxiliary movable contact and the auxiliary static contact respectively. Through unique structures of the auxiliary movable contact and the auxiliary static contact, an arc blowing loop is formed in a current breaking process, so that arcs between the contacts can be blown away from the contacts under the action of an external magnetic field, thus achieving a quick arc extinguishing effect; and through an arc extinguishing grid, an arc can be further segmented to improve the arc extinguishing effect.
Description
Technical field
The present invention relates to a kind of parts of low voltage power transmission equipment, specifically a kind of arc-blowing device of direct-current circuit breaker that is used in dc circuit breaker interrupting process extinguish arcs.
Background technology
Dc circuit breaker is when cut-offfing little electric current, because electric current is less, arc energy a little less than, electric arc tends to rest between the dynamic/static contact, and can not fast to the arc control device motion, may cause cut-offfing very difficult, arcing time is long, even can not cut-off, and then the circuit breaker dynamic/static contact is brought very serious ablation, even can burn whole circuit breaker.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of arc extinguishing ability can improve the dc circuit breaker contact and cut-off the time, the arc-blowing device of direct-current circuit breaker that operational reliability is high.
Arc-blowing device of direct-current circuit breaker of the present invention includes fixing fixed contact and can be closed by swing and moving contact or the moving contact of disconnection; Be provided with an auxiliary moving contact on the described moving contact, auxiliary moving contact is hinged on the moving contact, be provided with the spring that auxiliary moving contact is swung to closing direction between auxiliary moving contact and the moving contact matrix, also conduct electricity by being flexible coupling between auxiliary moving contact and the moving contact and be connected; Auxiliary moving contact offside is provided with one can contact with auxiliary moving contact the fixing auxiliary fixed contact that cooperates, auxiliary fixed contact is connected with fixed contact through one section coil, described coil is on an iron core, the two ends of iron core respectively are connected with one section and draw magnetic arm, and two sections are drawn the both sides that magnetic arm extends to respectively auxiliary moving contact and auxiliary fixed contact disconnection opening; Described auxiliary moving contact and spring force between the moving contact can make contacting early than contacting between moving contact and the fixed contact between auxiliary moving contact and the auxiliary fixed contact when dc circuit breaker closes a floodgate, and can make the disjunction of assisting between moving contact and the auxiliary fixed contact be later than disjunction between moving contact and the fixed contact when the dc circuit breaker separating brake.
Also be provided with arc extinguishing grid pieces drawing on the electromagnetic action force direction of magnetic arm to electric arc.
The present invention is when moving contact and fixed contact normally divide, close, unique texture by auxiliary moving contact and auxiliary stationary contact, when drop-out current, form the arc blow-out loop, utilize electric current self to form magnetic field, and by increasing magnetic structure so that magnetic field strengthens, and act between the contact of breaker, so that the electric arc between the contact is under the effect of externally-applied magnetic field, the contact that can blow off fast reaches the effect of fast arc extinction; By arc extinguishing grid pieces, further subdividing the arc strengthens arc quenching effect.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the perspective view of the embodiment of the invention.
Embodiment
As shown in the figure, this arc-blowing device of direct-current circuit breaker includes fixing fixed contact 1 and can be closed with moving contact by swing or the moving contact 2 of disconnection; Be provided with an auxiliary moving contact 3 on the moving contact 2, auxiliary moving contact is hinged on the moving contact 2, be provided with the spring 4 that auxiliary moving contact 3 is swung to closing direction between the matrix of auxiliary moving contact 3 and moving contact 2, also conduct electricity by being flexible coupling between auxiliary moving contact 3 and the moving contact 2 and be connected; The offside of auxiliary moving contact 3 is provided with one can contact with auxiliary moving contact the fixing auxiliary fixed contact 5 that cooperates, auxiliary fixed contact 5 is connected with fixed contact 1 through one section coil 6, coil 6 is on an iron core 7, the two ends of iron core respectively are connected with one section and draw 8, two sections of magnetic arms and draw the both sides that magnetic arm 8 extends to respectively auxiliary moving contact and auxiliary fixed contact disconnection opening; Auxiliary moving contact 3 and spring force between the moving contact 2 can make contacting early than contacting between moving contact 2 and the fixed contact 1 between auxiliary moving contact 3 and the auxiliary fixed contact 5 when dc circuit breaker closes a floodgate, and can make the disjunction of assisting between moving contact 3 and the auxiliary fixed contact 5 be later than disjunction between moving contact 2 and the fixed contact 1 when the dc circuit breaker separating brake.On the electromagnetic action force direction that draws 8 pairs of electric arcs of magnetic arm, also be provided with arc extinguishing grid pieces 9.
Operation principle of the present invention is as follows: when circuit breaker was in "on" position, the electric current Main Current was crossed between moving contact 2 and the fixed contact 1; During disjunction, because auxiliary moving contact and auxiliary fixed contact disjunction are slower, therefore electric arc results between auxiliary moving contact 3 and the auxiliary fixed contact 5, this arc current flows through blow-out coil 6, thereby produces arc blow-out magnetic field, by drawing magnetic arm 8, arc blow-out magnetic field is added on the electric arc vertical direction, thereby make electric arc produce an amesiality electromagnetic force, electric arc is blowed to arc extinguishing grid pieces, electric arc is extinguished rapidly.
Claims (2)
1. arc-blowing device of direct-current circuit breaker includes fixing fixed contact (1) and can be closed by swing and moving contact or the moving contact (2) that disconnects; It is characterized in that: be provided with an auxiliary moving contact (3) on the moving contact (2), auxiliary moving contact is hinged on the moving contact (2), be provided with the spring (4) that auxiliary moving contact (3) is swung to closing direction between the matrix of auxiliary moving contact (3) and moving contact (2), also conduct electricity by being flexible coupling between auxiliary moving contact (3) and the moving contact (2) and be connected; The offside of auxiliary moving contact (3) is provided with one can contact with auxiliary moving contact the fixing auxiliary fixed contact (5) that cooperates, auxiliary fixed contact (5) is connected with fixed contact (1) through one section coil (6), coil (6) is on an iron core (7), the two ends of iron core respectively are connected with one section and draw magnetic arm (8), and two sections are drawn the both sides that magnetic arm (8) extends to respectively auxiliary moving contact and auxiliary fixed contact disconnection opening; Auxiliary moving contact (3) and spring force between the moving contact (2) can make contacting early than contacting between moving contact (2) and the fixed contact (1) between auxiliary moving contact (3) and the auxiliary fixed contact (5) when dc circuit breaker closes a floodgate, and can make disjunction between auxiliary moving contact (3) and the auxiliary fixed contact (5) be later than disjunction between moving contact (2) and the fixed contact (1) when the dc circuit breaker separating brake.
2. arc-blowing device of direct-current circuit breaker according to claim 1 is characterized in that: also be provided with arc extinguishing grid pieces (9) drawing on the electromagnetic action force direction of magnetic arm (8) to electric arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210419983.3A CN102915894B (en) | 2012-10-29 | 2012-10-29 | Arc-blowing device of direct-current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210419983.3A CN102915894B (en) | 2012-10-29 | 2012-10-29 | Arc-blowing device of direct-current circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102915894A true CN102915894A (en) | 2013-02-06 |
| CN102915894B CN102915894B (en) | 2015-10-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210419983.3A Active CN102915894B (en) | 2012-10-29 | 2012-10-29 | Arc-blowing device of direct-current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102915894B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584293A (en) * | 2019-05-21 | 2020-08-25 | 杭州德睿达电气有限公司 | Contact system of direct current quick circuit breaker |
| CN111584321A (en) * | 2019-05-21 | 2020-08-25 | 杭州德睿达电气有限公司 | Magnetic quenching system of direct-current quick circuit breaker |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105714A (en) * | 1985-07-20 | 1987-02-11 | Y·S·保安有限公司 | Circuit-breaker |
| CN86204642U (en) * | 1986-09-17 | 1987-06-24 | 上海立新电器厂 | Direct-current magnetic field circuit breaker |
| JPH08250010A (en) * | 1995-03-13 | 1996-09-27 | Fuji Electric Co Ltd | Air circuit breaker |
| CN1238540A (en) * | 1998-05-07 | 1999-12-15 | 尹顿公司 | Electrical switching apparatus having arc runner integral with stationary arcing contact |
| CN102412078A (en) * | 2010-09-20 | 2012-04-11 | 赛雪龙公司 | Electromechanical circuit breaker |
| CN102592908A (en) * | 2012-02-22 | 2012-07-18 | 西安交通大学 | Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker |
| CN202871727U (en) * | 2012-10-29 | 2013-04-10 | 大全集团有限公司 | Arc blow-out apparatus of direct-current breaker |
-
2012
- 2012-10-29 CN CN201210419983.3A patent/CN102915894B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105714A (en) * | 1985-07-20 | 1987-02-11 | Y·S·保安有限公司 | Circuit-breaker |
| CN86204642U (en) * | 1986-09-17 | 1987-06-24 | 上海立新电器厂 | Direct-current magnetic field circuit breaker |
| JPH08250010A (en) * | 1995-03-13 | 1996-09-27 | Fuji Electric Co Ltd | Air circuit breaker |
| CN1238540A (en) * | 1998-05-07 | 1999-12-15 | 尹顿公司 | Electrical switching apparatus having arc runner integral with stationary arcing contact |
| CN102412078A (en) * | 2010-09-20 | 2012-04-11 | 赛雪龙公司 | Electromechanical circuit breaker |
| CN102592908A (en) * | 2012-02-22 | 2012-07-18 | 西安交通大学 | Low current electric arc magnetic blow-out device and arc-blowing method of medium-pressure direct current breaker |
| CN202871727U (en) * | 2012-10-29 | 2013-04-10 | 大全集团有限公司 | Arc blow-out apparatus of direct-current breaker |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584293A (en) * | 2019-05-21 | 2020-08-25 | 杭州德睿达电气有限公司 | Contact system of direct current quick circuit breaker |
| CN111584321A (en) * | 2019-05-21 | 2020-08-25 | 杭州德睿达电气有限公司 | Magnetic quenching system of direct-current quick circuit breaker |
| CN111584321B (en) * | 2019-05-21 | 2022-06-10 | 杭州德睿达电气有限公司 | Magnetic quenching system of direct-current quick circuit breaker |
| CN111584293B (en) * | 2019-05-21 | 2022-06-10 | 杭州德睿达电气有限公司 | Contact system of direct current quick circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102915894B (en) | 2015-10-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Effective date of registration: 20160126 Address after: 212211 Jiangsu city of Yangzhong province science and Technology Park Road Xinba Daquan No. 11 Patentee after: Jiangsu Daqo Kfine Electric Co., Ltd. Address before: 212211 Jiangsu city of Zhenjiang province Yangzhong city new town of New South Road, No. 66 Patentee before: Daquan Group Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.11 Daquan Road, science and Technology Park, Xinba Town, Yangzhong City, Jiangsu Province Patentee after: JIANGSU DAQO KFINE ELECTRIC Co.,Ltd. Address before: No.11 Daquan Road, science and Technology Park, Xinba Town, Yangzhong City, Jiangsu Province Patentee before: JIANGSU DAQO KAIFAN ELECTRICAL APPLIANCE Co.,Ltd. |